Haruka Shimotsuki

Japanese singer and dōjin music composer (born 1986)

Haruka Shimotsuki (born November 15, 1980) is a Japanese singer and dōjin music composer known for her vocal themes in the Atelier Iris and Ar tonelico series. She also wrote the lyrics and sang the ending themes to the first two seasons of Rozen Maiden as well as the OVA under the name Kukui, with Myu. Shimotsuki's original music mainly consists of ethnic and fantasy music, and most of her songs are soft in tone.

from Wikipedia